Xdevice f for attaching and detaching electric lamps



' (NoModeL) v 2 Sheets-Sheet 1.

W. J. HAMMER.

DEVICE FOR ATTAGHING AND DETAGHING ELEGTRIG LAMPS. No. 363,332. PatentedMay 17, 1887.

(No Model.)

2 Sheets-Sheet 2. W. J. HAMMER. DEVICE FOR ATTAGHING AND DETAGHINGELEGTRIG LAMPS.

Patented May 17, 1887.

4 3.. w H, 7 QMWWMQQSQ 1 N PETznsl Phuln-Lilhognphcr, Washington, I:v C

siren rarns ATFN'I tricks.

AND FRANCIS R. UPTON,

OF ORANGE, NEIV JERSEY.

DEVICE FOR ATTACHING AND DETACHING ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 363,332, dated May 17,1887.

Application filed November 24, 1880. Serial No. 219,849. (No model.)Patented in GermanyNovembcr 25, 1883, No. 27,680.

To aZZ whom, it may concern:

Be it known that I, \VILLIAM J. HAMMER, of Boston, in the county ofSuffolk andState of Massachusetts, have invented a certain new anduseful Improvement in Devices for Attaching and Detaching ElectricLamps, of which the following is a specification.

In the use of incandescent electric lamps it is often necessary to placethem in situations where it is difficult and inconvenient to reach themfor the purpose of detaching them from their sockets when broken or toclean the glass, and for replacing them or substituting other lamps.

The object of my invention is to provide simple and efficient means forattaching and detaching lamps when they are so placed as to be beyondreach with the hand; and my in vention consists in the novel devices andcombinations of devices employed by me in accomplishing this object, ashereinafter described and claimed.

In the accompanying drawings, Figure l is a sectional View of theprincipal portion of my lamp attaching and detaching device in itssimplest form, shown as about to grasp a lamp for the purpose ofdetaching it; Fig. 2, an elevation of the same in the act of graspingthe lamp; Fig. 3, a longitudinal section, with the lamp-holder inelevation, of a more elaborate form of device; Fig. 4, an oppositelongitudinal section of a portion thereof; and Figs. 5

and 6 illustrate modified forms of my invcn tion on a smaller scale.

Referring, first, to Figs. 1 and 2, A is a pole or rod, which may be ofany desired length. Upon the end of said rod is a sleeve, B, preferablyof brass or similar suitable metal, which carries at its outer end theholder for 0 grasping the lamp, which consists of two parts,

0 O, hinged together at a a, the part O being attached to or formed inone piece with the sleeve B. The holder is preferably lined withchamois-skin, felt, or other soft material, C,

5 to prevent injury to the lamp. The jaws O 0 thus form a holder, whichis open at its top and of substantially cylindrical form, so that itssides will surround the lamp-globe with an even pressure and grasp it onall sides with sufficient friction to permitit to be turned, but

without danger of breaking it.

A lever, D, extends from the hinged or movable part 0, from which astout wire, I), or other connection extends, passing through slots inthe sleeve B and being attached to the bell-crank E, pivoted to alug, c,on said sleeve. From bell-crank E a cord, F, extends, passing underpulley d on the sleeve and extending down to the other end or handle ofthe pole A.

Upon the opposite side of the sleeve is secured a flat spring, G, whichbears with an outward pressure against the lever D, whereby' the twoparts 0 O of the holder are normally held together.

II represents an incandescent electric lamp, which in Fig. 1 is shown asscrewed into a socket or holder, I. Then it is desired to re move suchlamp from its socket, the operator raises the holder to a positionimmediately below the lamp, and then by drawing down on the cord F opensthe holder against the press are of spring G. up around the lamp'globeand releases the cord, whereupon the spring closes the holder upon theglobe, grasping the same firmly. :Bythen turning the pole, the lamp isunscrewed and removed from its socket, as shown in Fig. 2. is

Most of the incandescent electric lamps now in use are held in theirsockets by screwthreads, as shown. Some, however, are held byspring-clips, bayonet-catches, Ste. and it is evident that my inventionis equally well adapted for the removal of those so arranged.

Lamps are replaced in the socketin asimilar manner. The holder is openedand the lampplaced therein. The pole is raised to bring the lamp to thesocket. It is screwed or otherwise inserted therein, and the holder isopened and withdrawn by pulling the cord F.

7 It is evident that the bell crank may in some cases be dispensedwith-and the cord extend directly from the holder; but I prefer thearrangement shown, since it adds to the power which may be applied tothe holder.

The form of holder above described is principally useful when lamps arein such position that they may be reached by a simple vertical 8movement of the holder, and detached merely by turning the pole. Lampsare often placed,

however, at various angles from the position of the operator, and wheredownwardlysus- He then pushes the holder metal and curved back uponitself, as shown.

' ,Q, which is of any desired length, being partly such parts beingjoined together by thumbpended lamps must be reached from above, and inother situations where thesimple apparatus described cannot convenientlybe used.

G, and the bell-crank E, from which extends the cord F, as abovedescribed, is inserted loosely in the tube K, which is preferably of Iprefer to form this tube in two parts,as will be explained. Within thistube K is a long spiral spring, L, extending through substantially thewhole length of the tube, to which spring the sleeve B is attached. Forconvenience of illustration, the greater part of the length of thespring is illustrated by the dotted lines extending through the tube. Atthe other end of the spring it is attached to a spindle, M, securedrigidly to a coupling-sleeve, N. This sleeve may be of any desiredlength, a part of it being broken away in the drawings to illustratethis. At or near its lower end there is keyed within sleeve N a handle,0, for turning the sleeve, such sleeve having a long slot, e, wherebythe device may be lengthened by drawing the handle O farther out. Thehandle 0 turns in asleeve, P, which is arranged to slide in and out ofthe outer inclosingtube,

broken away in the drawings, and sleeve P is drawn in andout of Q toalter the length of the whole, being held at the desired point by athumb-nut, f, passing through slot in tube Q and setting against sleeve1?. A jointed or extensible pole is thus formed capable of beingshortened or lengthened, as desired.

The curved tube K is made in two parts, as stated, and as shown moreclearlyin Fig. 4,

' nuts h h, by loosening which the two parts of the tube may be set. atan angle with each other, in order to accommodate the device todifferently-situated lamps. The cord F extends the whole length of thedevice. I

In operating this device the holder 0 O is brought near the end of thelamp-globe, opened by means of the cord F, placed over the globe, andpermitted to close thereon. The holder and lamp may then be turned byturning the handle 0, the sleeve N and spindle M being thus turned andthe motion being communicated by the spiral spring L to the holder 0 O.1Figs. ,5 and 6 show other waysof communicating motion to the holder. InFig. 5 motion is communicated by small pulleys or wheels '5 i, overwhich a belt or cord, 7;, passes, and in Fig.6 bevel-gears Z Z and mmare employed for the same purpose. It is evident that the form of thepole and curved tube may be varied to suit the requirements ofparticular cases without departing from the spirit of myinvention, forby the use of the spiral spring the turning motion may be communicatedthrough any form of tube. What I claim is 1. The combination of a poleorrod, a pair of hinged jaws carried thereby and open at the top forgrasping an incandescent electric lamp, and means extending within reachof the operator for controlling the movement of said jaws, substantiallyas set forth.

2. The combination of the pole or rod, the hinged jaws carried therebyand lined with flexible material for grasping an incandescent electriclamp, and means extending within reach of the operator for controllingthe movement of said jaws, substantially as set forth.

3. The combination of the pole or rod, the hinged jaws carried thereby,forming, when closed, a holder of substantially cylindrical form andopen at the top, for grasping an incandescent electric lamp, and meansextending within reach of the operator for controlling the movement ofsaid jaws, substantially as set forth.- I

4. The combination of the pole or red and the lamp-holder consisting ofa part attached stationary to said pole or rod and a movable part hingedthereto, the arm extending from said stationary part, the spring keepingsaid holder normally closed,and the bell-crank and cord connected withsaid arm for opening said holder, substantially as set forth.

5. The combination of a poleor rod,a holder carried thereby, constructedand adapted to grasp an incandescent electric lamp, aspring keeping saidholder closed normally, and means extending within reach of the operatorfor opening said holder, substantially as set forth.

6. The combination of a pole or red, a sleeve secured to the endthereof, a lamp-holder comprising a part attached rigidly to said sleeveand a movable part hinged thereon, a lever extending from said movablepart, a spring on said sleeve bearing against said lever, so as to keepthe holder normally closed, and a cord extending from said lever withinreach of the operator, substantially as set forth.

7. The combination of a pole or rod, a lampholder carried thereby, andmeans independent of said pole or red for turning said holder,substantially as set forth.

8. The combination of a hollow pole or rod, a lamp-holder carriedthereby, and a spiral spring extending within said pole or rod to saidholder for movingsaid holder independ ent of the pole or red,substantially as set forth.

9. The combination of a curved or angular hollow pole or rod, a lampholder carried thereby, and means within said pole or red for movingsaid lamp-holder independent of the pole or rod, substantially as setforth. I

10. The combination of the curved or angu IIO lar hollow pole or red,the loose sleeve inserted? therein and terminating in the lamp-holder, Y

the spiral spring attached to said sleeve and extending throughthecurved or angular portion of said pole or rod, and a turning-handleconnected with-said spring and projecting beyond said pole orrod,substantially as set forth. 11. The combination, with thestraightpole or electric lamp, means extending within reaeh of theoperator for opening and closing said holder, and means for turning saidholder 111- I5 dependent of said pole or rod, substantially as setforth. I

This specification signed and witnessed this 18th day of November, 1886.

WM. J. HAMMER.

Witnesses:

J. B. WOODWORTH, EDWARD E. PARKER,

